@phdthesis{76422,
  author = {Adrian Simmons},
  title = {Capturing trends and low-frequency variations in reanalyses},
  year = {2006},
  journal = {ECMWF/Geo Workshop on Atmospheric Reanalyis, 19-22 June 2006},
  pages = {93-104},
  month = {2006},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}